Doctor profile · Federal record
Dr. Karen Chestnut, FNP
Family Nurse Practitioner (CMS: Nurse Practitioner) · Oxnard, CA
- NPI 1144577347
- Accepts Medicare
- MIPS 77.1 / 100 · 2023
- 14 yrs in practice
- Female
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
1600 N Rose Ave
Oxnard, CA 930303722
(805) 550-4478 - Mailing address
-
537 Jeffrey Dr
San Luis Obispo, CA 934051003
Credentials & registration
- NPI registered
- August 2012 — 14 yrs on file
- Profile last updated
- September 20, 2012
- Year of graduation
- 2012 — 14 yrs since
- Specialty taxonomy
- 363LF0000X — NUCC code
- State license (1)
- California #22385
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1144577347. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
451
Distinct HCPCS
8
Medicare allowed
$38,681
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 170 | 121 | $80 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 102 | 81 | $111 | |
99348 |
Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes | 53 | 38 | $66 | |
99349 |
Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes | 34 | 27 | $111 | |
99442 |
Telephone medical discussion with physician, 11-20 minutes | 31 | 29 | $59 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 23 | 23 | $115 | |
99441 |
Telephone medical discussion with physician, 5-10 minutes | 19 | 18 | $36 | |
99497 |
Advance care planning, first 30 minutes | 19 | 19 | $72 |
In context: peer comparison
Among 9 peers in Oxnard Family Nurse Practitioner, average services per provider: 56. This provider delivers 8.1× the peer median.Open Payments
Industry payments received
All-time total
$36
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Janssen Scientific Affairs, LLC | 1 | $35.63 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
447
Patients
68
Total drug cost
$18,482
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 76 | 24 | $720 |
| Levothyroxine Sodium | Generic | 73 | 20 | $1,005 |
| Amlodipine Besylate | Generic | 45 | 13 | $254 |
| Tamsulosin Hcl | Generic | 31 | 0 | $488 |
| Losartan Potassium | Generic | 28 | 0 | $405 |
| Omeprazole | Generic | 27 | 11 | $310 |
| Metoprolol Succinate | Generic | 26 | 0 | $419 |
| Lorazepam | Generic | 20 | 0 | $170 |
| Eliquis (Apixaban) | Brand | 18 | 0 | $13,378 |
| Gabapentin | Generic | 18 | 0 | $373 |
Frequently asked questions
What is Dr. Karen Chestnut's medical specialty?
Dr. Karen Chestnut practices Family Nurse Practitioner in Oxnard, CA.
Where does Dr. Karen Chestnut practice?
Dr. Karen Chestnut practices at 1600 N Rose Ave, Oxnard, CA 930303722. Office phone: 8055504478.
What is Dr. Karen Chestnut's NPI?
Dr. Karen Chestnut's National Provider Identifier (NPI) is 1144577347, issued by NPPES.
Does Dr. Karen Chestnut accept Medicare assignment?
Yes. Dr. Karen Chestnut accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Karen Chestnut commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214); Residence visit for established patient with low level of medical decision making (HCPCS 99348). Source: CMS Medicare Physician & Other Practitioners file.